Coding attachment for typewriters



June 9, 1925. 1,541,183

J. POWERS 1 CODING ATTACHMENT FOR TYPEwRiTERs Original Fild April '25. 1922 3 Sheets-Sheet 1 In tar: Jame} POJTQIS,

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June 9, 1925 J. POWERS CODING ATTACHMENT FOR TYPEWRITERS OriginalFiled April 25. 1 22 5 Sheets-Sheet 2 Ire/Van tor: I Jain/will; r5,

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June 9, 1925.

,1. POWERS CODING ATTACHMENT FOR TYPEWRITERS 3 Sheets-Sheet 5 Original Filed April 25, 1922 ll/i/tn/es e5:

Ire/Vania r.- B iv flit, c/ameg Powers, 7 m4 Patented June 9, 1925.

UNITED STATES I 1,541,183 PATENT OFFICE.

JAMES POWERS, OF NEW YORK, N. Y., ASSIGNOR TQ AMERICAN CODE MACHINE CO'M- PANY, 0F MEMBHIS, TENNESSEE, A CORPORATION OF TENNESSEE. I

conme ATTACHMENT FOR TYPEWRITERS.

Application filed April 25, 1922, Seria'l at. 556,413. Renewed April 30, 1925.

To all whom. it may concern:

i 7 Be it known that I, JAMES Powers, a citizen of the United States, residing in New York, in the county of New York and State of N ewYork, have invented certain new and useful Improvements in Coding Attachments for Typewriters, of which the following is a specification.

This invention relates to an apparatus for formulating and translating codes, and is herein designated as an automatic code machine. The invention relates particularly to improvements in the code formulator'and translator. disclosed and claimed in my United States patent for apparatus and method for formulating and translating codes, No. 1,315,406, patented Sept. 9, 1919, the object of the invention of said patent being to provide an apparatus for trans mitt-ing messages or correspondence in code language thereby to do away with the use of code books and other similar known code media, while at the same time providing an improved code system impossible of deciphering without-the key thereto; and to provide a code apparatus simple in construction and operation and by means of which innumerable codes can be formulated as required, so that if desired such codes may be changed fromday to day.

While the present invention relates to machines or apparatus or devices for formulatmg and translating codes, it is noted that the invention is not limited to formulating or translating machines nor in some respects,

even to bode machines.

One object of the present invention is to provide in an apparatus of this kind, an automatic code changing device by which, during the coding a-=new code will be automatically formulated from time to time-,as for instance at the endof each word, thus to prevent unauthorized decoding.

Another object of the present invention is to provide in an apparatus of this kind an improved arrangementfor facilitating the setting of the machine to the selected code.

Another object of the present invention is' to provide an apparatus of this kind which may be conveniently applied to and used with an ordinary typewriting machine without in any manner modifying or adjusting a slngle part of'the typewriting machine.

Other objects of the invention are to improve generally the simplicity and efficiency such apparatus and toprovide an apparatus of this kind which is durable, eco-.

nomical to manufacture and operate and Which will not easily get out of order.

Other objects of the'invention'will appear as the description proceeds; and while herein details of the invention are described, the

invention is not limited to these, since many and various changes may be made without departing from the scope of the invention as claimed.

In the accompanying drawing, showing Fig. 4 is a fragmental axial sectional view,

partly in elevation of the and support therefor; V

Fig. 5 is a side elevation of the automatic changing device;

coding mechanism Fig, 6 is a front elevation of the automatic changing device;

Fig. 7 is a horizontal axial sectional view, artly evice; 2 Fig. 8 is a front elevation of a locking means for the code changing device; and

in plan of the automatic changing Fig. 9 is an inner side elevation of the index bracket of the automatic changing device. a

My improved coding machine 10 is shown in combination with a typewriting machine 11 having number and character keys 14. The coding machine is carried on a base 15 carrying a pair of pedestals 16 provided at their upper ends with horizontally alined bearing bores 17.. A connection support 18 carried at a forward upward incline on the top of said pedestals comprises a shallow cup-shaped member '20 having a co-axial sleeve boss 2] and having its side walls22 formed withan annular series of longitudinalapertures 24 and upwardl and outwardl extended to forma top p ate 25 forward y extended to form a number and character zone 26 having zone openings 27.

usual letter keys :12 (Fig. 2) and v A rotary key carrying disk 28 disposed on said top plate is provided with a sleeve shaft 29 disposed in said sleeve boss 21, and with an annular series of small bores 30 respectively alinable with any one'of said longitudinal apertures, andis provided with an annular series of numbers 31 (Fig. 3) corresponding to said small bores 30. Ferrules 33 (Fig. 4) disposed in said zone openings 27 comprise enlarged intermediate portions 34, reduced lower apertures 35- and upper small bores 36. Letter keys 38 and character keys 39' are provided with plunger rods 40 and 41 vertically slidable in the sm allbores 30 and 36 of said disk and ferrules respectively and having actuating heads 42 and 43 on their lower ends. Flexible connections 45 and 46 comprise outer casing members 47 secured to the lower ends of said apertures 24 and 35 and inner members 48 terminating at the upper ends with contact heads 50 and 51 engageable by said actuating heads 42 and 43.

Rotation of the disk 28 permits any one of Y o the actuating heads 42 to be brought in register with any one of the contact heads 50, for changing the code as will be later explained. 1 v

Bow-springs 52 and helical springs 53 respectively resting on a shoulder 54 of said side wall and the bottoms of said intermediate portions 34 of the ferrules yieldably uphold said contact heads and the inner members 48. Corner brackets 55 (Fig. 2) on the forward corners of said base-carry a -guitle support 56 provided with vertical guide:bores removably receiving ferrules 57 having said casings 47 secured fast-therein and alining said inner members 48 from saidletter and character keys withthe :cor-

' responding typewriter keys 12 and 14 enl fore. of the keys 12 or '14.

gageable by actuating buttons 58 secured on the lower ends of said inner members. Depression of the keys 38 or 39 causes the depression of the inner'member 48 and there- An L-bracket 60 mounted o the lower face of the bottom of said cup-s aped member carries a fixed shaft 61 mounted on the end thereof and disposed in and projecting through said sleeve shaft 29 and provided with a head 62 carryinga flange 63 provided. with an annular series of numerals 65 (Fig. 3) marked thereon corresponding to the longitudinal apertures 24 of said Well, and adapted to register with anyone of said numbers 31. Flat concentric indicating cover rings 66 and 67 rotatably guided in the same plane over said'series of numbers and numerals respectively by shoulders 68 and) 69 (Fig. 4) are each provided with a handle 70 and an'exposure opening 71 whereby the ring can be rotated to [cause said {exposure opening to expose and thereby indicate any one of said numerals or numbers for purjpawl'bore .101 y the race'86 or 8 poses presently to be explained. Retaining rings 73 and 74 mounted on said head and rotary disks respectively hold said cover rings in place. j

A worm wheel 75 fast on the lower end of said sleeve shaft 29 is engaged by a worm 76 fast on a code-changing worm shaft 78 rotatable in said alined bgaring bores 17 and an approximately central worm shaft bearing bore 79 (Fig. 7) in an index bracket 80 (Fig. 6) having an upper flange 81 mounted at one side edge of said top plate 25 and having a plurality of concentric pawl races 85 86 and 87 (Fig. 9) in its outer face each provided with pawl stops apart, the stops of the outer and middle races 87 and 86 comprising stop shoulders 88 and 89 disposed rearwardly and for wardly respectively, while the stops of the innermost concentric race 85 comprise depressions 90. An; index crank disk 93 fast on the outer end of said worm shaft 78 is provided near the periphery withan undercut radial slot 94 (Fig. 7), a ball-pawl bore 95 closed at theouter end and here shown diametrically opposite to the radial slot, and a handle 96 (Fig. 6) whereby the disk, worm shaft and said key-carrying disk may be rotated to change the code. A ball-pawl 98 in said pawl bore is pressed by a spring 99 into said depressions as the disk 28 rotated, thereby to indicate that the rods 40 a come into alinement with the heads 50 at eachquarter turnof the index disk 93. A sliding pawl carrier 100 in sa d radial slot is-provided with a stop pawl-bore 101 registerable with said outer or middle races 87 or 86 and vreceives a plunger stop pawl 102- comprising an outer manipulating head 103, an inner stop head 104 engageable with said stop shoulders 88" or 89 depending 'on the position of the pawl carrier. A sprmg- 105 disposed between said stop head 104 and an annular shoulder at the outerend of the presses the pawl hehd into With theapparatus asillustrated and, thus described, it is possible to send code messages in substantially the manner described in my said patent. If the flexible connectors be so arranged that when the number 1, of the key carrying .disk' registers with the numeral 1 of the flange 63, the depression of the A-key 38 will depress the A-key of the typewriter, and depressionof the B-key 38 -will depress the B-keyof the typewriterg,

and so on',' the operator, in sending a node, V message will turn the character disk into..

any desired position other than that in which the characters will be the same as those on the typewriter. In' other words I by revolving the crank 96 he will turn the disk 28 so that the A-key ofatheepparatus will operate some other key lever than the A-key. of the typewriter. For instance, if

Powers he would rotate the rings 66 and 67 to expose and indicate, for example, numeral 1 on the flange 63 and, say, number 13 on the key carrying disk, so as to.

give what might be called the code number 1-13; then the operator would operate the crank 96 until the said number 13 regis- Thus he would when depressed on the key-carrying disk would depress say the D-key of the typewriter, .and the O-key of the key-carrying disk would depress the C-key of the typewriter, and so on, so that while the operator was writing the word Powers, 'the'typewriter would write some unintelligible word, which, however, would always be the same when the same numeral of the flange 63 was in register with the same number of the key-carrying disk. This word would be DCKSFG provided that in Fig. 3 thedisk was rotated say 13 spaces to the left to have the letter P correspond with the letter D on the typewriter, and the number 13 of the disk to register with the numeral 1 of the flange 63. However, it will be understood, of course, that the unintelligible word just quoted would not necessarily 'be the wordthat is written with the ordinary typewriter, because the letters need not be arranged as above stated and in general they would not be so arranged; but they simply serve as an example.

Theoperation thus far described is similar to that of my patent; but the present machine is susceptible to further changes of the code.

For instance, suppose the number 1 of the disk be made to register with the numeral 1 of the flange 63, and the flexible connector 46 leading from the D-key 38'be led, not to the D-key 12 of the typewriter, but to, say, the X-key 12 of the typewriter, and

the flexible connector from the C-key- 38 he led to the N-key 12, and the K-key 38 be connected to the T-key 12, then with the code number 1-13, as above stated, the spelling of the word Powers on the keys 38 would not spell the word DCKSFG on the tewriter as above stated, but might spell lie word XNTLFV.

The ferrules 57 (Fig. 2) are, as stated, removable 'and interchangeable, so that. by shifting the flexible connections, as just stated, a practically unlimited number of codes may be, made, which number could be multiplied by the number possible from rotating the disk 28. This would create a ever be needed.

It is, of course, understood that the flexible connectors 46 of the receiving-typewriter number of codes much larger than. could would be, as by previous understanding,-

arranged the same. as that of the sending J typewriter. Code instructions for changing able. In addition the code number given as 1-13 above, could by previous arrangement, or otherwise, be changed to any one of a large number of code numbers as often as desired. For instance, the sender could telegraph the code to the receiver each time a code letter was sent, or they could agree on some 'difi'erent code for each day of the week, month or year, or they could have some secret sign printed in the code letter itself to disclose the code number. Thousands of different secret ways of communicating the code number could be devised.

The number and character keys 39 and 14 are not in any way operatively connected with the code changing mechanism, since toinclude numbers and characters in codemessages would interfere with the telegraph- I ing of the code messages.

Separate keys 107 and 108 are also provlided for the spacing bar 116 and the capital 5 lift.

In accordance with the foregoing with the sending andreceiving arrangements being duplicates, the sending disk is set with the code-number say 1 -13, and this writes r presses the D-key 12. With a similar unreversed setting of the code number of 1- 13, depression of the D-key 38 would depress R-key 12, which is not desired. Therefore, in order to strike the P-key 12 of the receiving typewriter, the disk as must be rotated in reverse direction, thirteen spaces toright until number 1 of the typewriter registers with numeral 13 of the flange 63, thus giving the reverse code number 13-1,- wh-ich will cause depression of the D-key 38 ofthe disk to depress P-key 12 of the typewriter for commencing spelling the word Powers.

Additional means for still further complicating the code by automatically changing the code after each word will now be described. I I

A plurality of actuating collars or cams 110, 111 and 112 fast on said wormshaft 78 are provided respectively with one, twoand four actuating fingers 114 in the plane of the cams disposed multiples of 90 apart, and

engageable with a spacing lever 115 (Fig. 5)

.engageable with the spacing bar or key 116 of the typewriterand fulcrum'ed on a shift shaft 117 slidable in a shift sh'aft bearing with said shaft bearing 118 is provided w1th a plurality of notches 120 having characters associated designating 1, 2, 4 and .ofi' in any one of which may be received an index pin 121 fast in said shift shaft and engageable in said notches to set said spacing lever 115 in position to be out of reach of said fingers 114, as in Fig. 7, or to be engaged by the fingers 114 of the cam having a number of fingers corresponding inversely to said designating characters.

The operation of the above described automatic code changing device will be easily understood, when it is remembered that it merely automatically changes the code each time the typewriter is spaced.

The worm connection 7 5K 76 (Fig.v 4) is such that a quarter turn of the crank 96 will turn the key carrying disk the distance from one contact head to the adjacent contact head, thereby changing the code number one space for each quarter turn; the crank being rotated a half turn,"the code number will be changed two spaces; and if the crank be turned a complete turn, the code number will be changed'four spaces.

Thus if the machine be set for the code number "1-13 as above explained, and the pin 121 (Fig. 7 be set to 4,, the word Powers spelled once on the keys 38 Will typewrite the word DCKSFG as abdve described; and if the crank 96 be then turned one revolution to the right, or clockwise, the key-carrying disk will also be; counterclockwise through four [additional inter-key spaces or to the code-number1-17 or seventeen code-number.spaces in all, and at the same time the finger 114 of the cam 110 will depress the spacing key 116 and space the typewriter carriage one space. After this is done, the word Powers spelled on the keys 38- will typewrite ZYGOBC;

whereupon another clockwise complete revo- I lution of the crank96 will again space the typewriter carriage once, changing the code number to 1-21, and Powersispe'lled on the keys 38 will typewrite VUGKXY. If the pin 121 be set to 2, the fingers 114 of the cam 111 will space the carriage one space and the code will be changed two spaces on each half turn of the crank. In

like mannerif the pin 121 be set to 1 the carriagewill be spaced once by a finger of the cam 112 and the code will be changed one space on each quarter turn of the crank. It is, of course, understood that if the'flexibye connectors 46 be arranged differently, difl'erent incongruous words will be spelled as above explained.

The ball 98 drops into the depressions 90.

and marks the quarter turns, by impulse and helps'to hold theerank on the quarter. If the crank 96 and disk 25 are to be revolved rightwardly, or clockwise, as above noted the pawl carrier. 100 is set to its outer position as indicated by the word Right so that the head 104 may snap over the shoulders 88 and preventanti-clockwise retrogression. If

the crank 96 is to be revolved leftwardly, or

anti-clockwise, the pawl carrier is moved to vinner position indicated by the word Left and the head 104 engages the shoulder 89 to prevent accidental clockwise or rightward movement.

'hen the automatic code-changinginechauism is to be used, the code number-must lie-given more in detail. Thus in the example just given, in detail, the code L133 24 could be telegraphed or otherwise communicated or agreed upon. This would mean that on the sending machine the number 13 of the key-carrying disk was set under thenumeral1 of the flange 63, that the pawl carrier 100 was set to the word Right on the disk 93, and that the pin 121 was set innotch l.

The receiving machine, however, would have to be set to the reverse code number 13-1 L4?- whieh would mean that the number 1 of the key carrying disk would have to be set under the numeral )6 a complete anticlockwise or leftward turn,

which would space the carriage once and change the. code number to 17-1,*wliereupon the second word would be copied, and so on. The action of the pawl. head 104 on the shoulder 89 'wouldpreVent' the turning, of the crank in the wrong direction:

As it is desirable to lock the coding machine to prevent the unauthorized decoding therewith or other use thereof, a convenient efiicient locking arrangement is provided whichwill now be described.

A bolt carrying bracket 125 (Fig. 8) mounted under thefflange 81 of thefindex bracket is provided with a bolt opening re-- ceiving a bolt 127 having its'outer end portion in a bolt opening 128 in the bracket 80 and slidable into a locking opening 131) (Fig. 5) of the index disk. A spring 131 engaging between-the index bracket and an intermediate cdllar 132 of the bolt yieldably retracts the bolt from the bolt opening except when held in place by a detent 133 3 fast on the pin cylinder 1340f a cylinder and engages under said top plate 25 to prolock 135 mounted in said top plate 25 with its escutcheon 136 above the top plate. When the lock is locked said detent holds said bolt in said bolt openin to prevent the rotation of the index disk, the adjustment of the keycarrying disk. and the changing of the code.

A sheet metal wall .140 (ljig. 1) surrounding'the mechanisms of the machine rests in a groove 141 (Fig. 2) on said base and on the upper edge 142 of said end brackets tect the mechanisms from dust, handling or the like, and to enhance the appearance of the machine.

I claim:

1. In combination, a support; a rotary key-carrying disk; keys on said disk in annular series; connections a ranged to be engageable by any one of saidkeys and to engage typewriter keys; code-changing means for rotating said disk; and spacing means whereby the typewriter is spaced as the disk is rotated.

2. In combination, a support; a rotary key-carrying disk; keys on said disk in annular series; connections arranged to be engageable by any one of said keys and to engage typewriter keys; code-changing means for rotating said disk; and spacing means whereby the typewriter is spaced as the disk is rotated one or more interkey space increments.

3. In combination, means for causing a l typewriter to write in code; and mechanism comprising a shaft for changing the code when the typewriteriis to be spaced; cams on said shaft provided with different numbers of actuating'fingers; a longitudinally shiftable shift shaft; and a spacing lever en- "gageable with the typewriter spacing lever which is fulcrumed on said shaft to be engaged by the fingers of any one or none of the cams as the shift shaft is shifted and the code changing shaft is rotated.

4. In combination, a support; a rotary key-carrying disk; keys on said disk in annular series; connections arranged to be engageable by any one of said keys and to engage typewriter keys; code-changing means comprising a rotary shaft for rotating said disk; cams on said shaft provided with different numbers of actuating fingers; a longitudinally shift'able shift shaft; and a spacing lever engageable with the type writer spacing lever which is fulcrumed on said shaft to be engaged by the fingers of any one or none of the cams as the shift shaft is shifted and the code changing shaft is rotated. n y -5. In combination, a typewriter; a rotary lay-carrying disk; keys on said disk in an- :..ular series; connections arranged to be engageable by any one of said keys and to engage typewriter keys; a code changing shaft adapted on rotation to rotate said disk; an

index bracket an index crank-disk fast on ward alinement with said shaft bearing bore and provided with a plurality of notches having characters designating 1, 2, 4 and off; a shift shaft slidable in said shift shaft bearing; a spacing lever .ful-

crumed on said shift shaft and engageable with the spacing bar of the typewriter and engageable by the fingers of one of said collars at a time; and an index pin fast in said rod and engageable insaid notches to set said spacing levers in position'to be engaged by one of said fingers. V 6In combination, a' typewriter having keys; a support having an annular series of apertures; a rotary key carrying disk having an annular series of numbers; an annular series of keys corresponding to said numbers and provided with plunger rods slidable in saiddisk and alinable with said apertures; connections disposed in said apertures and connected to and operating said typewriter keys; a fixed head at the center of said disk and carrying a series of ing ratchet connection with the index bracket for rotation in either direction.

7. In combination, a typewriter having keys; a support having an annular series of apertures; a rotary key-carrying disk having an annular series of numbers; an annular series of keys corresponding to said numbers and provided with 'plungerrods slidable in said disk and alinable with said apertures; connections disposed in said' apertures and connected to and operatifig said typewriter keys; a "fixed head at the center of said disk and carrying a series of numerals corresponding to said apertures and registerable with said numbers; a code changing shaft adapted on rotation to rotate said disk; an index bracket; an index crank-disk fast,on said shaft and having ratchet connection with the index bracket for rotation in .either direction; cams on- (i said shaft provided with different numbers of actuating fingers; a, longitudinally shiftable shift shaft; and a spacing lever en gageable with the typewriter spacing lever which is fulcru'med on said shaft to be engaged by the fingers of any one of the cams as the shift shaft is shifted and the code changing shaft is rotated. 8'. In combination, a-rotary key-carrying disk; keys on said disk in annular series; connections arranged to be engageable by any one of said keys and to engage typewriter keys; a code changing shaft adapted to rotate said disk; an index brackethaving a bearing bore receiving said shaft and concentric pawl races all provided with pawl stops equal angles apart and comprising stop shoulders disposed rea'rwardly and forwardly respectively; an index crank disk mounted on said shaft and provided with a radial slot;- a sliding pawl carrier in said slot and having a stop pawl bore registerable with said races; and a plunger stop pawl in thestop pawl bore and comprising a manipulating head and an inner stop head yieldably engageable with said stop shoulders.

9. In combination, a rotary key-carrying disk; keys on said disk in annular series;

l connections arranged to be engageable by any one of said keys and to engage typewriter keys; a code changing shaft adapted to rotate said disk; an index bracket having a concentric pawl race provided with pawl stop depressions equal angles apart; an index crank disk mounted on-said shaft and provided with a ball pawl (bore; and a ball pawl in said pawl bore and yieldablyen gageable in said depressions.

l0; In combination, a rotary key-carrying disk; keys on said disk in annular series;

connections arranged to be engageable by anyone of said keys and to engage typewriter keys; a code changing shaft adapted to rotate said disk; an index bracket having a bearing bore receiving said shaft and a pluralityof concentric pawl races all provided with pawl stops equal angles apart,

the stops of the outer and middle races comprising stop shoulders disposed rearwardly and forwardly respectively, while the stops 'of the other race comprise depressions; an

index crank disk mounted on said shaft and provided with a radial-slot, and a ball-pawl bore closed at the outer end and diametrie cally opposite to the slot; a ball pawl in said pawl bore and yieldably engageable in said depressions; a sliding pawl carrier in said slot and having a stop pawl bore registel-able with said outer or middle races; and i a plunger stop pawl in the stop pawl bore and comprising a manipulating head and an inner stop head yieldably engageable with said stop shoulders.

11. In, combination, a typewriter having keys; a support having an annular series of apertures; a rotary key-carrying disk having an annular series of numbers; an annular series of keys provided with plunger rods slidable in said disk and alinable 12. In combination,asupport; a rotary key-carrying disk; keys on said disk in annular series; and flexible connections arranged to be engageable by different ones of said keys and to engage any of. the letter keys of a typewriter.

13. In combination, a typewriter having "keys; a support having an annular series of apertures; a rotary key-carrying d1sk having an annular series of numbers; an annular series of keys provided with plunger rods slidable in said disk and alinable with-said apertures; and flexible cable connections disposed in said apertures and detachable to aline and connect with any of said typewriter keys.

V 14. In combination, a support; a keycarrying disk having an annular series of numbers; a series of keys; flexible connections comprising flexible outer casing members secured to said support, and inner flexible members actuatable by said keys; and a guide support having said casings removab ly secured therein and alining said inner members with the typewriter keys in position to depress the typewriter keys.

15. In combination, a typewriter having keys; a base; a support on said base having an annular series of apertures; a rotary key-carrying disk having an annular series of numbers; an annular series of keys corresponding to said numbers and provided with plunger rods slida-ble in said disk and alinable withsaid apertures and provided with actuating heads; flexible connections comprising outer casing members secured to the lower ends of said longitudinal apertures, and inner members terminating at the upper ends with contact heads engageable by said actuating heads;springs resting on said support and yieldably upholding said contact heads; corner brackets on the forward corners of said base; a guide support carried on said brackets and provided with vertical bores having said casings removably secured therein and alining said inner members with the correspond ng typewriter keys. v i

16; keys; a base; a supporton said base having an annular series of apertures; a rotary key-carrying diskaihaving an annular series of numbers; an annular series of keys corresponding to said numbers and provided with plunger ro'ds slidable in said disk and alinable with said apertures and provided In combination, a typewriter having with actuating heads; flexible connections comprising outer casing members. secured to the lower ends ofsaid longitudinal apertures, and inner members terminating at the upper ends With/contact heads on gageable by said actuating heads; springs resting onsaid support and yieldably upholding said contact heads; corner brackets on the forward corners of said base; a guide su port carried on said brackets and provided with vertical guide home just over and alined with said keys respectively; ferrules mounted in said guide bores and having said casings secured therein and alining said inner members with the corresponding typewriter keys; and actuating buttons secured on the lower ends of said inner -members and adapted to depress the typewriter keys. 7

17 'Incombination, a typewri'ting machine having keys; a coding machine comprising a base; a key-carrying means on said base; corner brackets on the forward corners of said base; a guide support carried on said brackets and provided with vertical guide bores just over and alinedwith said keys respectively; ferrules in said guide, bores and jalining with said typewriter keys; actuating members in said ferrules; actuat ing buttons secured on the lower'ends of said 18'. In combination,

.ac'tuating me-mbersand adapted to engage the typewriterkeys ;and coding and decod- 111g connections between the keys of said can'ying meansand the actuating members. a support carrying a I series of characters. thereongia movable keycarrying member oil-lazing aseries oflcharacters registerablewit the first named characters; keys on said member corresponding to the characters" thereon; connections engageableby any one of said keys and to actuate typewriter keys;.and means to in dicate'any of said; characters. I 7

19 In combination,- aflsup'port carrying a. ser es of characters; a key-carrying means carrying a series of characters registerable with the first named thereon; connections on said support en gageable by any one of said keys and to,

actuate typewriter keys; and a pair of adjustable means associated with the" respec tive character series and each adjustable to indicate any characterof its associated series. f

20.- In combination, a support carrying a series, of characters thereon; a'rotarykeycarrying disk car ing a series of charac ters registerable Wlth the first named characters; keys on said disk inannular series corresponding to the characters thereon; connections on said support corresponding to the characters thereon and arranged to be "engageable by anyone of said keys and to engage typewriter keys; and a pair of adjustable means associated with the respective character series and each adjustable to characters; keys on f said member corresponding tothe'characters indicate any character of its associated series.

21.-In combination, a support carrying an annular series of charactersthereon; a rotary key-carrying disk carrying an annular series of characters registerable with the first named characters; an annular series of keys on said disk corresponding to the characters thereon; and an annular series of connecannular series of numbers; an annular series of keys slidable on said disk to actuate said connections, and corresponding to said numbers amember carried by said support and provided with. an annular series of numerals corresponding to said numbers and to said connections and adapted to register with any one of said numbers; adjustable indicating means associated with said'series of numbers and numerals respectively and respectively adjustable to indicate any one of said numerals or numbers.

23. In combination, a support; an annular series of coding connections disposed on said support and adaptedwhen actuated to operate typewriter keys; a rotary key carrying disk disposed on said support and provided with an annular series of small bores respectively alinable with any one of said connections; and having-an annular series oinumbers in regular order corresponding to-saidfbor'es; keys provided with plunger rods slidable in said bores to actuate said.

connections; a flange-carried by said sup port and provided with an annular series of numerals marked thereon concentric to and corresponding to saidv numbers and to said connections and adapted to register with any one ofsaid numbers; and concentric cover rings rotatably held over said series of numbers and numerals respectively and .each'pronded wlth exposure opening whereby the rings can be rotated to expose any. one of said-numerals or numbers.

24-. In combination; a connection support comprising a shallow cup-shaped member having a co-axial sleeve boss, and having its sidewalls formed with an annular series Iof longitudinal apertures; a. rotary key carrying disk disposed on said top plate and provided with a sleeve shaft disposed in said bores respectively alinable with any one of boss, and with an annular serles of small plunger rods and adapted to operatetype said apertures, and with an annular series of numbers 1n regular order corresponding to said bores; keys provided with plunger rods slidable in said bores; an L-shaped bracket mounted on the lower face of the bottom of said cup-shaped member; a fixed shaft mounted on the end of said bracket and disposed in and projecting through said" sleeve shaft and a flange provided with an annular series of numerals marked thereon corresponding to said numbers and to the said apertures and adapted to register with any brie of said numbers; flat concentric cover rings rotatably held in the same plane oversaid series of numbers and numerals respectively and eachprovided Witlra handle and an exposure opening whereby the rings can be rotated to expose any one of said numerals or numbers;'and connect-ionsdls posed in said apertures and operable by sai writer keys. 7

25. In combination, a typewriter having keys; a support having an annular series of apertures; a rotary key-carrying disk having an annular series of numbers; an

annular series of keys corresponding to said numbers and provided with plunger rods slidable in said disk and alinable with said apertures connections disposed in said apertures and connected to and operating said typewriter keys; a code changing shaft adapted on rotation to rotate said disk; an

. index bracket; an index crank-disk fast on said shaft and having a bolt opening; a bolt 'slidable into locking engagement with said disk; anindex bracket having a flange secured under said support; an index crankdisk fast onsaid shaft and having a locking opening and ratchet connection with the index bracket for rotation in either direction;

a bolt carrying bracket mounted under said flange and provided with a bolt opening; a bolt "in said openings slidable into said locking opening and having an intermediate collar; a spring engaging between the index bracket and said collar for retracting the bolt; a cylinder lock mounted in said support With its pin cylinder projecting at its lower end; and a detent fast on said cylinder and adapted when the lock is locked to hold said bolt in said bolt opening to prevent adjustment of the key carrying disk.

27. In combination, a supporting men'iber formed with an annular series of apertures;

'a rotary key carrying disk disposed on said member and having an annular series of small boresalinable withsaid apertures;

letter keys provided with plunger rods "ertically slidable in said bores; flexible connections comprising "outer casing members secured to the lower ends of said longitudinal apertures, and inner members terminating at the upper ends with contact heads engageable by said plungers; springs resting on said support and yieldably upholding said'contaot heads; and guide supports receiving the lower ends of said outer casings and holding the flexible connections with their inner members in position to operate typewriter keys.

28. In combination, a shallow cup-shaped member having a co-axial sleeve boss, and having its side walls formed with anintermediate inner shoulder and an annular series of longitudinal apertures piercing said shoulder and the lower part of the member; a rotary key carrying disk provided with a sleeve shaft disposed in said boss, and with an annular series of small bores respectively alinable with any one of said apertures; letter keys provided with'plunger rods verticalily slidable in said bores and having actuating heads on their lower ends; flexible connections comprising outer casing members secured to the lower ends of said apertures, and inner members terminating at the upper ends with contact heads engageable by said actuating heads; bow-springs resting on said shoulder and yieldably upholding said contact heads; and guide supports receiving the lower ends of said outer casings and holding the flexible connections with their inner members in. position to opcrate-typewriter keys.

JAMES POWERS. 

